Is it the Future of Computing?
For basic users looking for a single device and simple OS to browse the web/check email, watch Netflix/YouTube, listen to music, and create text documents/sketch notes, it could be. iPads have always been ideal for these tasks, and the same question could have been asked years ago.
However, smartphones are adequate as personal computers for many of these people, and they are much more portable than an iPad Pro. Pair that with the cheap cost of Windows laptops or even MacBook Airs, both of which come with physical keyboards, and it becomes much harder for the iPad Pro to win these users over.
Then there's the rest of us. No, an iPad Pro will not be replacing my 27" 5K iMac running desktop OS X anytime soon.